如題，我們現(xiàn)在需要讓一個(gè)特效顯示在UI上，但是直接拖拽特效到canvas里和節(jié)點(diǎn)同級(jí)也沒(méi)有效果啊、

1

它明明有在運(yùn)行 也在ui 的前面了 為什么還是顯示不出來(lái)呢

其實(shí)是因?yàn)閷蛹?jí)的問(wèn)題導(dǎo)致的
這里的canvas order設(shè)置的是10

2

而特效的order還是默認(rèn)的值比我們的canvas order低
我們只需要獲取特效的renderer 然后在設(shè)置它的order = canvas的order + 1就可以顯示啦

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class SetOrder : MonoBehaviour
{
    public int order = 0;
    int lastorder = 0;

    [SerializeField]
    Canvas rootCanvas;
    Renderer[] renderArray;

    void Start()
    {
        rootCanvas = this.gameObject.GetComponentInParent<Canvas>();
        if (rootCanvas == null)
        {
            Debug.LogError("沒(méi)有在 "+ this.gameObject.name +" 找到父節(jié)點(diǎn)里的Canvas");
            return;
        }   
        
        order = rootCanvas.sortingOrder + 1;

        renderArray = this.gameObject.GetComponentsInChildren<Renderer>();
        if (renderArray == null || renderArray.Length == 0)
        {
            Debug.Log("沒(méi)有找到 " + this.gameObject.name + " 下的Renderer");
            return ;
        }

        int len = renderArray.Length;
        for (int i = 0; i < len; i++)
            renderArray[i].sortingOrder = order;

        lastorder = renderArray[0].sortingOrder;
    }

    void Update()
    {
        if (lastorder != order)
        {
            int len = renderArray.Length;
            if (renderArray != null && len > 0)
            {
                for(int i = 0; i < len; i++)
                    renderArray[i].sortingOrder = order;

                lastorder = renderArray[0].sortingOrder;
            }
        }
    }
}

3